package com.atguigu.springcloud.controller;

import com.atguigu.springcloud.entities.CommonResult;
import com.atguigu.springcloud.entities.Payment;
import com.atguigu.springcloud.lb.LoadBalancer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

@Slf4j
@RestController
@RequestMapping("/consumer")
public class OrderController {

	public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";

	@Resource
	private LoadBalancer loadBalancer;

	@Resource
	private DiscoveryClient discoveryClient;

	@Resource
	private RestTemplate restTemplate;

	@Resource
	@Qualifier("restTemplate1")
	private RestTemplate restTemplate1;

	@GetMapping("/payment/create")
	public CommonResult<Payment> create(Payment payment) {
		return restTemplate.postForObject(PAYMENT_URL + "/payment/create", payment, CommonResult.class);
	}

	@GetMapping("/payment/get/{id}")
	public CommonResult<Payment> getPayment(@PathVariable("id") Long id) {
		return restTemplate.getForObject(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
	}

	@GetMapping("/payment/lb")
	public String getPaymentLB() {
		List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
		if (instances == null || instances.size() <= 0) {
			return null;
		}
		ServiceInstance serviceInstance = loadBalancer.instances(instances);
		URI uri = serviceInstance.getUri();
		return restTemplate1.getForObject(uri + "/payment/get/1", String.class);
	}

	@GetMapping("/zipkin")
	public String zipkin() {
		return restTemplate.getForObject(PAYMENT_URL + "/payment/zipkin", String.class);
	}
}
